Automobile or vehicle tire.



` UNITED STATES PATENT OFFTOE.

' GODFRED KNADLER, or CLEVELAND, OHIO.

i AUTOMOBILE OR VEHICLE TIRE.

Specification of Letters Patent.

Patented Aug'. 25, 1908.

- Appueefieefued August 2o, 1906, serial No. 331,242. Renewed october1e, 1907. serial Ne. 397,677.

To all whom it may concern: f

Be it known that I, GODFRED KNADLER, a citizenA of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio,lhave invented certain new and useful Improvements in, Automobile orVehicle Tires, and do' declare .that the following isa full, clear,vandzexact description of lthe invention, which"'will enable others.skilled in the art to which it appertains to make and use thesame'. l A

My lnvention relates to automobile orvehicle tires, and the inventionconsists in an improvement'- upon the style of tire shown in LettersPatent issued to me Dec. 1,'9, 1905, No, 807,748.

My improved tire embodies certain novel features of construction andlproportion of greatdegree.- In short, a vehicle equifpped .out

parts which give thetirelife and resiliency comparatively the same asina Apneumatic tire, but without the structural Weakness of' thepneumatic tire, in that my tire is almost incapable of being punctured.rEven though my tire is punctured or `cutjunder extreme conditions, it isso proportionedl and conu s'tructedltlviat the puncture or cut does notimpairnits efliciency. or resiliency in .any

with myimproved tire will not be place of commission even though thetire may receive a unct'u're or cut, but can continue to run jiwit out.noticeably lessening the cushioning eilect of the tires, and Withoutdanger of rim cutting the tires.

In -the drawings, Figure 1 is a cross section of one form of myimproved. tire, and Fig. 2' is a perspective view of a modificationthereof as herein fter fully described.

The present construction, as well as the one on which it is animprovement, is adapted to what are known as clencher rims, al#

though lit may be adapted to any other form of rim which gives the tirea proportionately wide and firm base and insures a durable enrim, andthe said sides are so fashioned thatl when pressed together within theWheel rim they constitute essentially a solid base. v` Incident to thisformation, I construct the tireA +A.- with a substantially centralopening'Z extending around the same and constituting the air space orcore of the tire, and the con# i solid form, when'fastened in the rim.`erwlse andas viewed 1n cross-section, the

original form when underthe I i tinuous s lit 3 where the sidesl'of thetire meetin t e base is of course hermetically sealed by crowding the-said'sides' together.

It will be seen also that' the-'side Walls facing each-.other at split 3are. of a depth greater even than the depth fof rim B, so that the tirevhas all` the advantage of a solid base for service, While it possessesall the Atulvantages belonging to its manufacture by reason of lts onepiece character and adaptability to fold inward transversely, into apractifally tire describes almost or exactly an. exact semi-circle inits outer or peripheral half 4,

` but preferably its sides have a less curvature and are massive overand above the outer edges of rim B as seer at.

N Ojw returning to the air space or core 2, it

will b e seen that this portion of the tire is" especially vdesigned toco-act with the slit in the base of the tire and With'the other featurethereof already referred to and whereby exceptional strength andserviceability are obtained without 'the sacrifice ofresiliency whichhas been found so indispensable in automobile and like tires. Thus,observe that the said air space or core 2 is exactly' or practicallyheart or pear sha e in its lower or inner portion as bounded y walls 6',while its upper'or Outer=portion is curved transversely on a circleconcentric with the outer circle 4 of the tire. This gives all points onthe periphery or tread of the tire exactly the same relation to thecore, while the outer and lower base portion of the sides of the tire isgiven a deeper embodiment of rubber and consequently corresponding.increase of resistance and sustaining power than it could otherwisehave and at the exact Oint `where such support is needed. These ines areindicated between an, 1;, in the two figures, and

run to the lower sideportions of the core 2,

which, converging in substantially straight linesas they do inthe lettero, not only narrow'the core at this point as com ared with a.

ring shape, but distribute the ateral pressure into different lines fromwhat'would occur if the core were round inits base. Obviously, too, thegreater depth of the solid portion of the tire is obtained over the basein or behind the 'V shaped walls 6', and-hence the lines of weightdistribute themselves mostly into the base of the-tire as indicated bylines y, y, and the Whole tire is held u toward its ibad, rathei` thanilattcning out and riding eirc'ssively upon the rim.

The base proper for description is referred .to as that portion withinthe engaging edges b of the rim and as indicated by a and the y saidinturned edges b engage in the grooves or channels 8 along both sides ofthetire as usual in clencher construction, This or any equivalentconstruction may be employed..

Sometimes it occurs that especial precaution is wanted` against possibledisengagementl from the rim by torsional or other eX- cessive sidestrain, as ma occur in turning a short corner under hig speed and withheavy load, and hence in Fig. 2, I show a modification of base--a-inwhich short wires or rods. 9 are varranged at intervals transversely ofthe base through the side-beads of the tire and extend'only through oneside thereof to the middle alternately. Thus said wires or rods arestaggered as to the two sides of ther base and terminate alike at thesplit 3 from both sides. This contributes materially'V to the strengthof the engagement of the' base of the tire under the edges b' of the rimby which it is confined and effectually anchprs the tire, thereby makingit impossible to throw the tire from the rim, even -under the mostsevere side strain. Propor' tionately the space 2 is small as comparedwith the Well known pneumatic tire, and also as compared with 'the solidrubber wall which incloses it. The advantages of this are twofold,'rstthe deep. solid wall-gives me a punctureless tire, and secondly,v 1tgives me practically the strength of a solid tire, but

withl the resiliency and absorbing quality of a pneumatic tire when itstrikes an obstruction. Furthermore, the construction is such that it iseasily manufactured'and placed on the rim.

For purposes of comparison, it will be ob served that the cross sectiono f the open space is just equal to the thickness of the rubber aboutthe same as may be seen in the .drawings which represent a full size 3%inch tire.

When successive ressure is brought to bear upon the tire, t e slit inthebase will open up at its upper end in that portion lembodiment of rubberat any other outer portion of the tire above the for the rim, said baseabove the level of the to edges of the rim,

thereby giving additiona resilient qualities tubular body semi-circularin cross section in its uter portion and having a centrally divided basehaving flat abutting Walls eX- tending above the edges of the Wheel rim,

and means for fastening the tire in the rim.

3. A non-inatable endless cushion tire molded in one piece and 'having acentrally divided base with abutting faces and flaring Walls above saidfaces and any outer Wall rounded and projecting outwardly above theedges of the Wheel rim to provide a vdeeper t is point than at Wheelrim, in combination With a rim adapted to confine the tiregand presssaid faces firmly together.

4.' A clencher Whelrim, in combination witha non-inflatable cushion tirecomprising a tubular molded rubber body having a semicircular eri heralportion 1n cross section and divi ed ase portions with side channelsortions having flat contacting faces central y of the tireextendingabove the edges vofthe rim and being 'compressed to ether within the rimto provide asolid base, and locking wires em- .the W eel rim.

In testimony whereof-I sign this specifica-A' tion in the presenceof'two witnesses.

GODFRED 'KNADLER- Witnesses 4 R.' B. MOSER,

O.`A. SELL.

bedded transversely throu h each of said base ortions on a plane be owthe edges of

